How long does it take to fly to Sofia?

Flight times vary depending on what airport in Colorado you fly out of and what airport in Sofia you fly into. For example, flying from Denver to Sofia takes 14h 51m on average. On the other hand, flying from Grand Junction to Sofia takes 18h 19m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

What is the cheapest airline that flies from Colorado to Sofia?

Lufthansa, British Airways, and Turkish Airlines are the most popular carriers operating from Colorado to Sofia

What airlines fly to Sofia?

Turkish Airlines, United Airlines and Lufthansa are the top three most popular airlines that fly to Sofia from Colorado according to our data. Turkish Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Sofia. Keep in mind that there are 3 different airlines that fly to Sofia on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Colorado to Sofia Airport?

Prices for flights from Colorado to Sofia Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Colorado to Sofia Airport?

As of August 2025, there are 3 operators available to choose from for flights from Colorado to Sofia Airport.

How old do you have to be to fly from Colorado to Sofia Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Sofia Airport.

What documentation or ID do you need to fly to Sofia Airport?

The required travel and health documents for your Sofia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sofia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$301 Cheap Flights from Colorado to Sofia in 2025

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Find the cheapest flights from Colorado to Sofia

Round-trip

One-way

Last minute

Cheap round-trip flights

8:20 pm - 8:50 pmDEN-SOF

16h 30m1 stop

10:05 am - 5:35 pmSOF-DEN

16h 30m1 stop

$592Turkish Airlines

Find Deal

Tue, Oct 28 - Sat, Nov 8

5:25 pm - 8:10 pmDEN-SOF

17h 45m1 stop

9:00 pm - 3:30 pmSOF-DEN

27h 30m1 stop

$597British Airways

Find Deal

Tue, Nov 4 - Wed, Nov 12

8:20 pm - 10:45 pmDEN-SOF

17h 25m1 stop

6:00 am - 1:40 pmSOF-DEN

16h 40m1 stop

$600United Airlines

Find Deal

Sun, Nov 2 - Thu, Nov 13

4:20 pm - 6:20 pmDEN-SOF

17h 00m1 stop

6:00 am - 4:00 pmSOF-DEN

19h 00m1 stop

$601Lufthansa

Find Deal

Tue, Nov 18 - Thu, Nov 27

6:35 pm - 6:20 pmDEN-SOF

15h 45m2 stops

6:15 am - 4:00 pmSOF-DEN

18h 45m1 stop

$604United Airlines

Find Deal

Wed, Oct 29 - Wed, Nov 12

5:20 pm - 10:45 pmDEN-SOF

21h 25m1 stop

6:15 am - 9:49 pmSOF-DEN

24h 34m2 stops

$610Lufthansa

Find Deal

Wed, Oct 29 - Fri, Nov 14

8:45 am - 6:20 pmDEN-SOF

25h 35m2 stops

6:15 am - 7:55 pmSOF-DEN

22h 40m2 stops

$650

Find Deal

Tue, Oct 28 - Sat, Nov 8

5:30 pm - 6:15 pmDEN-SOF

40h 45m2 stops

2:30 pm - 10:23 amSOF-DEN

28h 53m2 stops

$667Air Canada

Find Deal

Thu, Oct 30 - Wed, Nov 12

7:16 pm - 6:15 pmDEN-SOF

38h 59m2 stops

2:20 pm - 8:53 amSOF-DEN

51h 33m2 stops

$674Air Canada

Find Deal

Thu, Oct 30 - Mon, Nov 17

6:25 pm - 9:05 pmDEN-SOF

18h 40m1 stop

1:40 pm - 1:12 amSOF-DEN

44h 32m2 stops

$815

Find Deal

Wed, Oct 29 - Sat, Nov 15

British Airways flights from Colorado to Sofia

Our best British Airways deals on Colorado to Sofia flight tickets

British Airways

Nov 4

DEN5:25 pmDenver Intl

17h 45m

1 stop

SOF8:10 pmSofia

Nov 12

SOF9:00 pmSofia

27h 30m

1 stop

DEN3:30 pmDenver Intl

$597

Find similar

British Airways

Oct 28

DEN6:25 pmDenver Intl

17h 45m

1 stop

SOF8:10 pmSofia

Nov 9

SOF2:30 pmSofia

34h 00m

1 stop

DEN3:30 pmDenver Intl

$642

Find similar

British Airways

Oct 28

DEN6:25 pmDenver Intl

17h 45m

1 stop

SOF8:10 pmSofia

Nov 9

SOF2:30 pmSofia

34h 00m

1 stop

DEN3:30 pmDenver Intl

$643

Find similar

United Airlines flights from Colorado to Sofia

Our best United Airlines deals on Colorado to Sofia flight tickets

United Airlines

Nov 2

DEN8:20 pmDenver Intl

17h 25m

1 stop

SOF10:45 pmSofia

Nov 13

SOF6:00 amSofia

16h 40m

1 stop

DEN1:40 pmDenver Intl

$600

Find similar

United Airlines

Oct 29

DEN6:35 pmDenver Intl

15h 45m

2 stops

SOF6:20 pmSofia

Nov 12

SOF6:15 amSofia

18h 45m

1 stop

DEN4:00 pmDenver Intl

$604

Find similar

United Airlines

Nov 2

DEN8:20 pmDenver Intl

17h 25m

1 stop

SOF10:45 pmSofia

Nov 18

SOF6:00 amSofia

19h 40m

2 stops

DEN4:40 pmDenver Intl

$607

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 10/28

8:20 pm-8:50 pm

1 stop16h 30m

Sofia

Sat 11/8

10:05 am-5:35 pm

1 stop16h 30m

$592

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 11/4

5:25 pm-8:10 pm

1 stop17h 45m

Sofia

Wed 11/12

9:00 pm-3:30 pm

1 stop27h 30m

$597

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sun 11/2

8:20 pm-10:45 pm

1 stop17h 25m

Sofia

Thu 11/13

6:00 am-1:40 pm

1 stop16h 40m

$600

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 11/18

4:20 pm-6:20 pm

1 stop17h 00m

Sofia

Thu 11/27

6:00 am-4:00 pm

1 stop19h 00m

$601

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 10/29

6:35 pm-6:20 pm

2 stops15h 45m

Sofia

Wed 11/12

6:15 am-4:00 pm

1 stop18h 45m

$604

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 10/29

5:20 pm-10:45 pm

1 stop21h 25m

Sofia

Fri 11/14

6:15 am-9:49 pm

2 stops24h 34m

$610

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 10/28

8:45 am-6:20 pm

2 stops25h 35m

Sofia

Sat 11/8

6:15 am-7:55 pm

2 stops22h 40m

$650

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Thu 10/30

5:30 pm-6:15 pm

2 stops40h 45m

Sofia

Wed 11/12

2:30 pm-10:23 am

2 stops28h 53m

$667

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Thu 10/30

7:16 pm-6:15 pm

2 stops38h 59m

Sofia

Mon 11/17

2:20 pm-8:53 am

2 stops51h 33m

$674

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 10/29

6:25 pm-9:05 pm

1 stop18h 40m

Sofia

Sat 11/15

1:40 pm-1:12 am

2 stops44h 32m

$815

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Colorado to Sofia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Sofia?

The cheapest month to fly to Sofia from Colorado is in April. Flight prices, which tend to average around $535, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of April, then book flights to Sofia from Colorado during February instead. Flights to Sofia in February, while not as cheap as those in April, still average around $614.

What is the cheapest day to depart on your flight to Sofia?

According to our data, Thursday is the cheapest day to fly to Sofia from Colorado. The lowest ticket price found for a Thursday departure recently was $781. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Colorado to Sofia on a Saturday will generally be more expensive and average around $1,343. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Sofia?

In the evening is the cheapest time of day to fly from Colorado to Sofia when you can find flight prices for as low as $784. Flying to Sofia in the evening is an ideal time because this is during off-peak travel hours. In the morning is when there is more demand to fly to Sofia, so prices are often more expensive at around $1,319 per ticket.

How far in advance should I book a flight to Sofia?

You are more likely to see cheaper flights to Sofia from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Sofia for around $921 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sofia from Colorado for as low as $736 on momondo.

Can stopping save me money on Colorado to Sofia flights?

You could potentially save up to 61% on your flight if you consider stops on a Colorado to Sofia flight.

Cheap Colorado to Sofia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Sofia

Best Price Found	$301
Fastest flight time	13h 00m
Direct flights	None
Airports in Sofia	1 airport

The best one-way flight to Sofia from Colorado in the past 72 hours is $301. The best round-trip flight deal from Colorado to Sofia found on momondo in the last 72 hours is $592.

The fastest flight from Colorado to Sofia takes 13h 00m

There are no direct flights from Colorado to Sofia. Popular non-direct route for this connection is Denver Intl Airport - Sofia Airport.

There is 1 airport near Sofia: Sofia (SOF)

Search flight deals

When did momondo last update prices for flights from Colorado to Sofia Airport?
Prices for flights from Colorado to Sofia Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Colorado to Sofia Airport?
As of August 2025, there are 3 operators available to choose from for flights from Colorado to Sofia Airport.
How old do you have to be to fly from Colorado to Sofia Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Sofia Airport.
What documentation or ID do you need to fly to Sofia Airport?
The required travel and health documents for your Sofia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sofia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Colorado to Sofia

Compare and see reviews for airlines that fly from Colorado to Sofia with momondo

Airline	Rating	Free Cancellation	Price
Turkish Airlines	PriceFrom $522	Free Cancellation	Rating 7.3 3,941 reviews	Search Turkish Airlines flights
Lufthansa	PriceFrom $672	Free Cancellation	Rating 6.8 7,302 reviews	Search Lufthansa flights
United Airlines	PriceFrom $687	Free Cancellation	Rating 7.4 8,920 reviews	Search United Airlines flights

Bansko

Borovets

Velingrad

Sandanski

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Sofia?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Sofia from Colorado.

Can I find flights from Colorado to Sofia with flexible booking policies on momondo?

Flights from Colorado to Sofia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Colorado to Sofia?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Colorado to Sofia.

I’m not ready to book a flight from Colorado to Sofia right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Colorado to Sofia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sofia and let you know when they change.